Just using common sense, the older you get as a boxer your skills and power decrease. Very rarely do you see in boxing someone who is considered a good, but not great puncher become a one punch knockout artist overnight.

“I am a clean fighter,” boxer Juan Manuel Marquez on Monday predicted his drug tests from the Nevada State Athletic Commission will come back negative.

“I feel very happy with my training, I feel great about the tests,” Marquez told the Los Angeles Times. “I won’t have a problem.”

Marquez told the Times he was annoyed by speculation that his body didn’t develop naturally “after working hard for four months in Mexico. If I continue fighting, I’d like to do Olympic-style anti-doping tests with my opponent.”

The #1 reason for the speculation besides the drastic body change was the fact that Marquez’s strength and conditioning coach is BALCO snitch Angel Hernandez. Hernandez once bragged about having over 20 undetectable steroids in his possession. Now, he says he is a changed man and trains athletes the proper way.

Marquez can be annoyed all he likes, but there are valid reasons why people would be suspicious. I have no doubt his tests will come back clean because they didn’t do Olympic Style Random Drug Testing for this fight. They just collected urine before and after, so it would be easy to come off any PEDs he was taking in preparation for the fight and still test clean.